Battery cell unit, battery pack, battery, and electric device

By designing a suspended connection structure between the tabs and terminals in the battery cell, the problem of difficult-to-clean particulate matter during the connection process between the tabs and terminals is solved, achieving convenient cleaning and improved safety.

CN117154350BActive Publication Date: 2026-07-24NIO TECH ANHUI CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NIO TECH ANHUI CO LTD
Filing Date
2022-05-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

During the battery cell manufacturing process, particulate matter generated when the tabs and terminals are connected is difficult to clean, especially if it remains in the gap between the terminals and the sidewalls of the casing, affecting the safety of the battery cell.

Method used

Design a battery cell unit structure in which the tabs and terminals are connected by a first mounting part to form a cleaning space, which facilitates the cleaning of particulate matter by hand or vacuuming device. The traditional adapter plate is omitted, and the tabs and terminals are directly welded. The terminal base is suspended to avoid particulate matter residue.

Benefits of technology

This improves the ease of cleaning the battery cells, reduces the internal space occupied and internal resistance of the cells, and enhances the safety and production efficiency of the cells.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117154350B_ABST
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Abstract

The application discloses a battery cell unit, a battery pack, a battery and an electric device. The battery cell unit comprises a shell, a pole core and a pole column. The shell is provided with a mounting groove. The pole core is arranged in the mounting groove. The pole column comprises a base and a pole column body. The base is arranged in the mounting groove. One end of the pole column body is electrically connected with the base, and the other end of the pole column body is exposed outside the shell. The base comprises a first mounting part. The first mounting part is connected with a tab of the pole core and is suspended relative to a bottom wall of the mounting groove. Thus, particulate matters generated in a welding process can be cleaned.
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